WO2021235064A1 - Système, procédé et programme d'estimation de la position d'une fuite d'eau - Google Patents

Système, procédé et programme d'estimation de la position d'une fuite d'eau Download PDF

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Publication number
WO2021235064A1
WO2021235064A1 PCT/JP2021/010566 JP2021010566W WO2021235064A1 WO 2021235064 A1 WO2021235064 A1 WO 2021235064A1 JP 2021010566 W JP2021010566 W JP 2021010566W WO 2021235064 A1 WO2021235064 A1 WO 2021235064A1
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WIPO (PCT)
Prior art keywords
piping
route
leak
water leakage
position estimation
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PCT/JP2021/010566
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English (en)
Japanese (ja)
Inventor
雄大 鎌田
利之 峰
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株式会社日立製作所
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Priority to US17/925,537 priority Critical patent/US20230194378A1/en
Publication of WO2021235064A1 publication Critical patent/WO2021235064A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G01M7/025—Measuring arrangements

Definitions

  • the present invention relates to a technique for estimating the leak position of pipes such as water pipes buried in the ground.
  • Patent Document 1 As a technique for estimating the leak position of a water pipe, for example, there is a technique disclosed in Patent Document 1.
  • Patent Document 1 regarding the leak sound observed by the sensors installed at the two points, the leak sound having a high ratio of the high frequency component is higher than the leak sound having a low ratio of the high frequency component to the low frequency component. It is estimated that the location is close to. Then, the extrapolation point on the side close to the leak point, where the ratio of the high frequency component to the low frequency component matches the assumed value of the leak point, is estimated as the leak point (see, for example, FIG. 3 of Patent Document 1). ..
  • the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to more accurately estimate the leakage point of a pipe buried in the ground by using a single sensor installed at one point. And.
  • the leak position estimation system for estimating the position of leak in a piping network including a plurality of piping paths in the present invention has a determination unit and an estimation unit.
  • the determination unit determines whether or not water leakage has occurred in the piping network based on the measured value of the vibration related to the piping network acquired by the sensor installed in the piping network.
  • the estimation unit has the plurality of pipes based on the measured value and the predicted value of the vibration for each pipe path. Estimate the piping route where water leakage is occurring.
  • the predicted value of the vibration for each piping path is a value of the vibration that can be acquired by the sensor when water leakage occurs in each piping path.
  • a single sensor can be used to more accurately estimate the leakage point of a pipe buried in the ground. Issues, configurations and effects other than those described above will be clarified by the following description of embodiments for carrying out the invention.
  • the figure which shows the structure of the leakage position estimation system of embodiment The figure which shows the distribution of PSD of the vibration signal of a water pipe.
  • the figure which shows the 2nd example of a search path The figure which shows the display screen to display on the search route display part.
  • a flowchart showing a leak search route determination process A hardware diagram of a computer that realizes a server and a terminal.
  • various information it may be described by expressions such as “table”, “list”, “queue”, etc., but various information may be expressed by a data structure other than these.
  • various information such as “XX table”, “XX list”, and “XX queue” may be “XX information”.
  • identification information When describing the identification information, expressions such as “identification information”, “identifier”, “name”, “ID”, and “number” are used, but these can be replaced with each other.
  • a process performed by executing a program may be described.
  • the computer executes the program by the processor (for example, CPU, GPU), and performs the processing specified by the program while using the storage resource (for example, memory), the interface device (for example, the communication port) and the like. Therefore, the main body of the processing performed by executing the program may be a processor.
  • the main body of the process of executing the program may be a controller, an apparatus, a system, a computer, or a node having a processor.
  • the main body of the processing performed by executing the program may be any arithmetic unit, and may include a dedicated circuit for performing a specific processing.
  • the dedicated circuit is, for example, FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), CPLD (Complex Programmable Logic Device), or the like.
  • the program may be installed on the computer from the program source.
  • the program source may be, for example, a program distribution server or a storage medium readable by a computer.
  • the program distribution server includes a processor and a storage resource for storing the program to be distributed, and the processor of the program distribution server may distribute the program to be distributed to other computers.
  • two or more programs may be realized as one program, or one program may be realized as two or more programs.
  • a leak position estimation system that detects leaks in water supply pipes and identifies leak positions will be described.
  • the monitoring system can also be applied to leak detection and leakage position identification in other pipes such as gas pipes by using sensors having characteristics according to the purpose.
  • the vibration signal (sound pressure) of the water supply pipe buried in the ground is detected by a single water leakage sensor having a wireless communication function arranged in one water control valve or the like under the manhole. ..
  • the detected vibration signal is transmitted to a remote server by the wireless communication function.
  • the server estimates the position where the abnormal sound is generated based on the vibration signal, and displays the recommended leak position search route on the display unit based on the estimation result.
  • Sound pressure Y changes according to the distance between the sensor and the water leakage point and the attenuation rate. Therefore, a statistical correlation can be expected between the strength of the water leakage vibration in the pipe detected at the time of water leakage and the pipe information (geometry). Further, from Equation 2, it can be expected that the logarithm of the sound pressure Y can be expressed by a linear sum of values depending on the conditions (parameters) that characterize the pipe.
  • a multiple regression model showing the correlation between the piping information and the intensity of the water leakage vibration actually generated in the past is created. Then, the output when the piping information of the piping network that newly detected the leak vibration is input to the multiple regression model is used as the predicted value, and the leak position is based on the measured value and the predicted value of the strength of the newly detected leak vibration. To estimate. Then, based on the estimated leak position, the search route for searching the actual leak position is determined and displayed so that the leak can be detected efficiently.
  • FIG. 1 is a diagram showing a configuration of a leak position estimation system S.
  • the leak position estimation system S includes a server 1, a leak sensor 2, and a terminal 3.
  • the server 1 has a leak determination unit 11, a leak search route determination unit 12, a leak information storage unit 13, and a model update unit 14.
  • the leak search route determination unit 12 further includes a vibration intensity information creation unit 12a, a piping information storage unit 12b, a piping route extraction unit 12c, a route information creation unit 12d, an estimation unit 12e, an evaluation result storage unit 12f, and a search route calculation unit 12g.
  • the server 1 is supposed to be built on the cloud, but may be built on-premises.
  • the water leak sensor 2 is a single mobile sensor that is placed on a water control valve or the like under a manhole when performing water leak detection work.
  • the water leakage sensor 2 is installed in one water control valve in a piping network to be detected for water leakage including a plurality of piping paths, detects vibration signals of each piping path, and uses the detected vibration signal as a server via a wireless communication function. Send to 1.
  • the terminal 3 is a mobile terminal of an investigator who conducts a definitive survey from the ground on a pipe using a listening stick or the like and performs a definitive survey to identify the position where vibration sound is generated due to water leakage.
  • the terminal 3 has a search route display unit 30 and a definite survey data transmission unit 31.
  • the leak determination unit 11 performs a leak monitoring process (S2 and S3 in FIG. 10) and a leak determination process (S4 in FIG. 10).
  • the water leakage determination unit 11 receives the vibration signal (measured waveform) measured by the water leakage sensor 2 after being installed in the water control valve via the wireless communication function, and the self-phase relationship of the received vibration signal. Calculate the number and extract multiple peaks over time. Then, the water leakage determination unit 11 compares the extracted plurality of peak positions, determines that there is water leakage when the ratio of the peak positions matching exceeds the threshold value, and determines that there is no water leakage when the peak positions are equal to or less than the threshold value.
  • the leak determination unit 11 executes a leak search route determination process (S4, FIG. 11 in FIG. 10) for the piping network to be detected for the leak in which the leak sensor 2 determined to have a leak is installed. An instruction is output to the leak search route determination unit 12 so as to do so.
  • the vibration intensity information creating unit 12a calculates the PSD (Power Spectral Density) of the vibration signal determined by the water leakage determination unit 11 to have water leakage.
  • FIG. 2 is a diagram showing the distribution of PSD of vibration signals of water pipes.
  • the vibration intensity information creating unit 12a calculates the logarithm of the vibration intensity based on the distribution of PSDs having a frequency of 400 to 1000 Hz for each divided frequency band (PSD (logarithm) in FIG. 3).
  • FIG. 3 is a diagram showing vibration intensity information (logarithm) 12Ta of a water pipe. Then, the PSD (logarithm) of each frequency band is standardized with the PSD (logarithm) of a frequency of 400 to 450 Hz as 1 (PSD (normalization) in FIG. 3). Standardization enables analysis that does not depend on the absolute value of vibration intensity (leakage amount).
  • the vibration intensity information creating unit 12a outputs the PSD (normalized) measurement value to the estimation unit 12e.
  • the piping route extraction unit 12c extracts the piping route from the piping information 12Tb corresponding to the water leakage sensor 2 stored in the piping information storage unit 12b and determined by the water leakage determination unit 11 to have water leakage.
  • the piping route extracted here is a predetermined search distance (for example, 100) from the water control valve among the piping routes connected to the water control valve in which the water leakage sensor 2 is installed, which is included in the piping network to be detected for water leakage.
  • ⁇ 150m is the piping route.
  • FIG. 4 is a diagram showing piping information 12Tb.
  • the water leakage sensor 2 installed in the water control valve V shown in FIG. 4 is a water leakage sensor determined by the water leakage determination unit 11 to have water leakage.
  • the piping information 12Tb includes the piping type (material), the piping length for each piping type, the piping diameter for each piping type, the position of the water control valve, the position of the fire hydrant, and the branch for each piping route included in the target piping network.
  • Map information or map information including position and type is converted into data. From this map information, the route information includes at least one of the pipe length for each pipe type, the pipe diameter for each pipe type, the number of water control valves, the number of fire hydrants, and the number and types of branches for each pipe route. Therefore, route information for each distance from the water control valve V in which the water leakage sensor 2 is installed can be obtained.
  • the route 1 is a piping route from the fire hydrant H1 to the fire hydrant H2 starting from the water control valve V in which the water leakage sensor 2 is installed.
  • the route 2 is a piping route starting from the water control valve V, passing through the fire hydrant H3, and heading away from the fire hydrant H3.
  • the route 3 is a piping route starting from the water control valve V, overlapping the route 2 from the water control valve V to the branch in front of the fire hydrant H3, branching from the route 2 at this branch, and heading to the fire hydrant H4.
  • the route information creation unit 12d creates route information 12Td based on the piping route extracted by the piping route extraction unit 12c.
  • FIG. 5 is a diagram showing route information 12Td.
  • one combination of the values of the pipe route and the values of (pipe length (m), number of branches, number of water control valves) for each pipe type is one route information.
  • the route information creating unit 12d reaches the distance corresponding to the “pipe length” from the water control valve V in which the water leakage sensor 2 is installed for each pipe route and pipe type with respect to the route information 12Td. Enter the cumulative total of branches (number of branches) and the cumulative number of water control valves (number of water control valves) existing in the piping between.
  • the estimation unit 12e reflects the signal estimation model generated and updated by the model update unit 14 in the route information 12Td.
  • the PSD (normalized) predicted value corresponding to one route information, which is a combination of the pipe route and each pipe type (pipe length (m), number of branches, number of water control valves), is the route. It is input to the information 12Td.
  • Each of the PSD (normalized) predicted values is for a model obtained by analyzing the leak information 13T (FIG. 6) stored in the leak information storage unit 13 by the model update unit 14 by multiple regression analysis or the like. It is obtained by inputting the route information and outputting it.
  • FIG. 6 is a diagram showing water leakage information 13T.
  • the leak information 13T includes information on the leak position detected by each definitive survey by the investigator transmitted from the terminal 3.
  • the leak information 13T is a PSD (normalized) measurement for each frequency band acquired as a definitive survey result of an actual leak survey for each route information that is a combination of pipe type, pipe length, number of branches, and number of water control valves.
  • PSD normalized measured value (total)
  • One combination of pipe type, pipe length, number of branches, and number of water control valves is one route information.
  • the model update unit 14 performs multiple regression analysis of the correspondence between the route information in each record of the leak information 13T and the PSD (normalized) measured value and the PSD (normalized) measured value (total). Then, the model update unit 14 generates a multiple regression model that outputs a PSD (normalized) predicted value when the pipe type, the pipe length, the number of branches, and the number of water control valves are input.
  • the estimation unit 12e stores the PSD (normalized) measurement value (“23.7” in FIG. 5) output by the vibration intensity information creation unit 12a in the route information 12Td. Then, the estimation unit 12e calculates the difference between the PSD (normalized) predicted value and the PSD (normalized) measured value corresponding to all the route information of the route information 12Td as an evaluation index.
  • the estimation unit 12e estimates the position corresponding to the route information in which the absolute value of the difference (evaluation index) is the smallest in all the target piping routes or piping routes as the leak point.
  • the route information 12Td is stored in a predetermined storage area of the estimation unit 12e.
  • the estimation unit 12e has the position of the water control valve V (FIG. 4) as the origin, the pipe length on the horizontal axis, and the evaluation index corresponding to each pipe length on the vertical axis, and for each pipe route of the route information 12Td. , Create a graph (evaluation result 12Tf) plotting each point of the evaluation index corresponding to the pipe length.
  • FIG. 7A is a diagram showing a first example of the evaluation result 12Tf.
  • the evaluation result 12Tf is stored in the evaluation result storage unit 12f.
  • the search route calculation unit 12g determines the search route 12Tg with a high probability that the investigator will find the leak point based on the evaluation result 12Tf.
  • FIG. 7B is a diagram showing a first example of the search path 12 Tg.
  • the search route calculation unit 12g is a pipe in which the evaluation index value on the vertical axis is within a predetermined range within a predetermined search distance (for example, 100 to 150 m) centered on the water control valve V. Select the route, search direction, and search range.
  • a pipe route having a relatively small evaluation index may be selected regardless of whether or not the evaluation index is within a predetermined range.
  • the evaluation index is the smallest in the range of the distance (pipe length of the route information) of 0 to 23 m, the route 2 and 3 (overlap) is the smallest, the route 1 is the second smallest, and the distance is from the vicinity of 23 m to 100 m.
  • Path 1 is the smallest in the range.
  • the search route that moves from the vicinity of 23 m, which has a smaller evaluation index in routes 2 and 3, toward 0 m has priority. It is determined to be the first priority route 1. Further, in the range of about 23 m to 100 m, the search route that moves the route 1 in the direction from 100 m having a smaller evaluation index to 0 m is determined to be the priority route 2 having the second highest priority. In the total distance of the priority routes 1 and 2 up to this point, the search distance is about 123 m, which is within the limit of the search range.
  • the search route calculation unit 12g thus determines the search route 12Tg shown in FIG. 7B.
  • the search route calculation unit 12g may determine the search route as follows as a second example. As shown in FIG. 8A, in the second example, the priority route 1 is obtained in the same manner as in FIG. 7A. However, in the priority route 2, the priority route 1 reaches the water control valve V (distance 0 m), and as a turnaround, the route 1 having the next smallest evaluation index after the routes 2 and 3 is started from the water control valve V (distance 0 m). It may be a route that moves away from the water control valve V.
  • the search route calculation unit 12g considers the positional relationship between the piping route and the water control valve from the piping route whose evaluation index satisfies the predetermined condition within the range of the predetermined search distance (for example, 100 to 150 m). Then, a search path 12 Tg including an efficient search order and search direction is determined.
  • FIG. 9 is a diagram showing a search route display screen 30A displayed on the search route display unit 30.
  • the search route display screen 30A includes the evaluation result 12Tf and the search route 12Tg identifiablely displayed together with the priority.
  • FIG. 10 is a diagram showing a leak detection work flow.
  • the leak detection workflow shows a series of procedures to be performed when detecting a leak.
  • a water leakage sensor 2 is installed at a water control valve in the piping network to be detected by a researcher who confirms the water leakage (S1).
  • the water leakage determination unit 11 of the server 1 receives the vibration signal of the water pipe detected by the water leakage sensor 2 and determines the presence or absence of water leakage (S2).
  • the server 1 shifts the process to S4 when there is a leak in the piping path to be detected for leak (S3Yes), and repeats S2 when there is no leak (S3No).
  • the leak search route determination unit 12 of the server 1 performs the leak search determination process (described later with reference to FIG. 11).
  • the investigator conducts a definitive investigation in which the leak position is searched by a sound listening stick or the like based on the search route display screen 30A received from the server 1 by the terminal 3 and displayed on the search route display unit 30.
  • the investigator operates the terminal 3 to transmit the definite investigation result (see FIG. 6) to the server 1 via the definite investigation data transmission unit 31.
  • FIG. 11 is a flowchart showing a leak search route determination process (S4 in FIG. 10).
  • the leak search route determination process is executed by the leak search route determination unit 12 of the server 1.
  • the vibration intensity information creating unit 12a calculates and standardizes the logarithm of the vibration intensity based on the PSD distribution of the vibration signal input via the water leakage determination unit 11 for each divided frequency band (logarithm). ) Create 12Ta (S41).
  • the piping route extraction unit 12c extracts the piping route from the piping information 12Tb (S42).
  • the route information creating unit 12d creates the route information 12Td based on the route information of the piping route extracted by the piping route extraction unit 12c and the multiple regression model updated by the model updating unit 14 (S43). ..
  • the estimation unit 12e creates an evaluation result 12Tf including an evaluation index which is a difference between the PSD (normalized) predicted value and the PSD (normalized) measured value in the route information 12Td (S44).
  • the search route calculation unit 12g determines a search route including the priority and the search direction of each search route based on the evaluation result 12Tf (S45).
  • the search route calculation unit 12g transmits the determined search route 12Tg and the evaluation result 12Tf to the terminal 3, and causes the search route display unit 30 to display the search route display screen 30A (S46).
  • the measured value of the vibration of the piping network acquired by the water leakage sensor 2 and the predicted value of the vibration for each piping path that can be acquired by the water leakage sensor 2 when water leakage occurs in each piping path Estimate the piping route where water leakage is occurring based on. Therefore, it is possible to carry out an efficient survey by narrowing down in advance the scope of the survey in which the surveyor actually conducts a definitive survey using a sound-listening stick or the like.
  • the water leakage sensor 2 is a single sensor installed at one point in the piping network, a single sensor installed at one point can be used without using a plurality of sensors. It can be used to more accurately estimate the leak point of pipes buried in the ground.
  • the predicted value of the vibration of the pipe is predicted corresponding to this input by the prediction model generated based on the actual data of the leak investigation for searching the leak position of the pipe by inputting the route information. It is the value output as the value.
  • the predicted value becomes more credible than reflecting the past leak cases.
  • the route information is the pipe length indicating the distance from the water leakage sensor 2 for each pipe type, the pipe diameter for each pipe type, and the corresponding pipe route from the water leakage sensor 2 to this pipe length. Includes at least one of the number of control valves present, the number of fire hydrants, the number and types of branches. As the number of parameters included in the route information increases, the measured and predicted values of vibration can be made more accurate information that reflects the actual situation of the piping network in detail, and the estimation accuracy of the leak position can be improved.
  • the measured value and the predicted value of the vibration of the piping network are the normalized values of the logarithm of the vibration intensity calculated for each frequency band obtained by dividing the target frequency band by a predetermined bandwidth into the target frequency band. It is the total value which is totaled over. This standardization enables analysis that does not depend on the absolute value (leakage amount) of vibration intensity.
  • the piping route corresponding to this predicted value is estimated as the piping route where water leakage has occurred.
  • the leak position in the piping route where water leakage is presumed to occur is estimated from the position corresponding to the pipe length of the route information in which the difference between the measured value and the predicted value of vibration is minimized. , It is possible to improve the efficiency of the leak search by giving a guideline for the search of the leak position.
  • the search route including the piping route estimated to have leaked is included as the target for the leak survey, the investigator who actually conducts the definitive survey was presented.
  • a definitive survey can be efficiently conducted along the search route.
  • the piping path having the predicted value of vibration having a smaller difference from the measured value of vibration is prioritized and the search path for conducting the leak investigation. Is calculated. Therefore, it is possible to present a search route with a high probability that the leak position can be found earlier after the start of the search.
  • the water leakage sensor 2 is a single sensor installed in one water control valve in one piping network.
  • the water leakage sensor 2 is not limited to the water control valve, and may be installed at a fire hydrant, a branch, or any other point. In this case, each piping route in the piping network starts from the position where the water leakage sensor 2 is installed.
  • the water leakage sensor 2 is not limited to a single sensor, and may be configured to include a plurality of sensors.
  • the water leakage sensor 2 is configured to include a plurality of sensors, and by taking a majority vote of the water leakage position estimation results based on the measured values of each sensor, the piping route where water leakage is occurring is estimated based on the measured and predicted values of vibration. When doing so, the estimation accuracy can be further improved.
  • the measured and predicted values of vibration related to the piping network are values obtained by standardizing the PSD (log) of each divided frequency band (PSD (standard). ()), The total value obtained by totaling over the entire frequency band before division was used.
  • PSD PSD
  • PSD PSD
  • PSD normalization
  • one route information is a single pipe type. It was supposed to consist of piping.
  • the present invention is not limited to this, and one route information may be configured to include a plurality of pipe types. In this case, the "pipe length (m)" is provided for each pipe type.
  • the predicted value and measured value of PSD can be calculated more accurately, and the accuracy of the evaluation index, which is the difference between the predicted value and the measured value, is improved. It is possible to improve the estimation accuracy of the piping route where water leakage is occurring.
  • FIG. 12 is a hardware diagram of the computer 5000 that realizes the server 1 and the terminal 3.
  • the processor 5100, the memory 5200, the storage 5300, the network interface 5400, the input device 5500, and the output device 5600 are connected via the bus 5700.
  • the processor 5100 is a CPU (Central Processing Unit) or the like.
  • the memory 5200 is a RAM (Random Access Memory) or the like.
  • the storage 5300 is an HDD (Hard Disk Drive), an SSD (Solid State Drive), a medium reader, or the like.
  • the input device 5500 is a keyboard, a mouse, a touch panel, or the like.
  • the output device 5600 is a display or the like.
  • each program for realizing the server 1 and the terminal 3 is read from the storage 5300 and executed in cooperation with the processor 5100 and the memory 5200, whereby the server 1 and the terminal 3 are realized respectively. ..
  • each program for realizing the server 1 and the terminal 3 may be acquired from an external computer by communication via the network interface 5400.
  • each program for realizing the server 1 and the terminal 3 is recorded on a portable recording medium (optical disk, semiconductor storage medium, etc.), read by a medium reader, and cooperates with the processor 5100 and the memory 5200. It may be executed by work.
  • the present invention is not limited to the above-described embodiment, and includes various modifications.
  • the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations.
  • the configurations and processes shown in the embodiments can be appropriately dispersed, integrated, or replaced based on the processing efficiency or the mounting efficiency.
  • S Leakage position estimation system
  • 1 Server
  • 11 Leakage determination unit
  • 12 Leakage search route determination unit
  • 12a Vibration intensity information creation unit
  • 12b Piping information storage unit
  • 12c Piping route extraction unit
  • 12d Path Information creation unit
  • 12e estimation unit
  • 12f evaluation result storage unit
  • 12g search route calculation unit
  • 13 water leakage information storage unit
  • 14 model update unit
  • 2 water leakage sensor
  • 3 terminal
  • 30 search route display Department

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Pipeline Systems (AREA)

Abstract

La présente invention concerne un système (S) d'estimation de la position d'une fuite d'eau permettant d'estimer la position d'une fuite d'eau dans un réseau de plomberie notamment une pluralité de lignes de tuyauterie qui comprend une unité d'évaluation (11) et une unité d'estimation (12e) d'une fuite d'eau. L'unité de détermination (11) de fuite d'eau détermine s'il existe ou non une fuite dans un réseau de plomberie sur la base d'une mesure de vibration dans ledit réseau de plomberie acquise par un capteur (2) de fuite d'eau installé dans ledit réseau de plomberie. Dans le cas où l'unité d'évaluation (11) de fuite d'eau a déterminé qu'il y a une fuite se produisant dans le réseau de plomberie, l'unité d'estimation (12e) estime une ligne de tuyauterie, parmi la pluralité des lignes de tuyauterie, la fuite étant effectuée, sur la base de la mesure et d'une valeur prédite de vibration pour chacune des lignes de tuyauterie pouvant être acquises par le capteur (2) de fuite d'eau dans le cas où il y a une fuite dans la ligne de tuyauterie.
PCT/JP2021/010566 2020-05-22 2021-03-16 Système, procédé et programme d'estimation de la position d'une fuite d'eau WO2021235064A1 (fr)

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JP2020089465A JP7455662B2 (ja) 2020-05-22 2020-05-22 漏水位置推定システム、漏水位置推定方法、及び漏水位置推定プログラム
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